JPWO2006134661A1 - Elevator rope brake device - Google Patents

Abstract

The main rope for suspending the car is sandwiched between a first rope sandwiching body including a first roller and a second rope sandwiching body including a second roller. Each of the first roller and the second roller is rotated with the movement of the main rope. Further, at least one of the first roller and the second roller is a braking roller. The braking device includes a rotating body that rotates together with the braking roller, a braking body that is displaceable between a contact position that contacts the rotating body and an opening position that is separated from the rotating body, and a brake that displaces the braking body. A body displacement device. The braking device brakes the rotation of the rotating body and the braking roller by bringing the braking body into contact with the rotating body. The movement of the main rope is braked by braking the rotation of the brake roller.

Description

  The present invention relates to an elevator rope brake device for braking movement of a main rope that suspends a car.

  Conventionally, an elevator rope brake device has been proposed in which a main rope is gripped between two brake shoes to brake movement of the main rope. Each brake shoe is provided with a lining that contacts the main rope when the main rope is held. The movement of the main rope is braked by the frictional force between the lining and the main rope (see Patent Document 1).

Japanese National Patent Publication No. 7-509212

  As described above, conventionally, when the movement of the main rope is braked, the main rope is slid on the lining, so that the wear of the main rope and the lining becomes severe. Thereby, the magnitude of the braking force applied to the main rope is likely to vary. In addition, replacement work for parts such as the main rope and brake shoes becomes frequent, and the running cost increases.

  The present invention has been made in order to solve the above-described problems, and is capable of stabilizing the magnitude of the braking force applied to the main rope and reducing the running cost. The purpose is to obtain a braking device.

  The elevator rope brake device according to the present invention includes a first rope sandwiching body including a first roller and a second rope sandwiching body including a second roller, and the main rope for suspending the car is the first. Each of the first and second rollers is rotated with the movement of the main rope, and the first rope and the second rope A rope pinching device in which at least one of the roller and the second roller is a braking roller, a rotating body that rotates integrally with the braking roller, a contact position that contacts the rotating body, and an opening that is separated from the rotating body A brake body that is displaceable between the separated position and a brake body displacement device that displaces the brake body between the contact position and the open position; And brake the rotation of the braking roller Comprising a braking system, by braking rotation of the brake roller, so as to brake the movement of the main ropes.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows the rope brake device of FIG. It is a top view which shows the rope brake apparatus of FIG. It is a front view which shows the rope brake device of FIG. It is a front view which shows the rope brake device of the elevator by Embodiment 2 of this invention. It is a front view which shows the rope brake device of the elevator by Embodiment 3 of this invention. It is a plane sectional view which shows the rope brake device of the elevator by Embodiment 4 of this invention. It is a plane sectional view which shows the rope brake device of the elevator by Embodiment 5 of this invention.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided in the upper part of the hoistway 1. In the machine room 2, a hoisting machine 3 that is a driving device and a deflecting wheel 4 that is arranged at an interval from the hoisting machine 3 are provided. The hoisting machine 3 includes a hoisting machine main body 5 including a motor and a drive sheave 6 rotated by the hoisting machine main body 5.

  The floor 7 of the machine room 2 is provided with a through hole 8 that communicates the inside of the machine room 2 and the hoistway 1. A plurality of main ropes 9 passed through the through holes 8 are wound around the drive sheave 6 and the deflecting wheel 4. A car 10 connected to one end of each main rope 9 and a counterweight 11 connected to the other end of each main rope 9 are provided in the hoistway 1 so as to be able to move up and down. The car 10 and the counterweight 11 are suspended in the hoistway 1 by the main ropes 9. The car 10 and the counterweight 11 are raised and lowered in the hoistway 1 by the rotation of the drive sheave 6.

  In the machine room 2, an elevator rope brake device (hereinafter simply referred to as “rope brake device”) 12 for braking the movement of each main rope 9 is provided. The rope brake device 12 is supported by a support 13 fixed on the floor 7.

  A controller 14 that controls the operation of the elevator is electrically connected to the hoisting machine 3 and the rope brake device 12. The operations of the hoisting machine 3 and the rope brake device 12 are controlled based on a command (information) from the control device 14. The control device 14 is provided in the machine room 2.

  FIG. 2 is a longitudinal sectional view showing the rope brake device 12 of FIG. FIG. 3 is a plan view showing the rope brake device 12 of FIG. FIG. 4 is a front view showing the rope brake device 12 of FIG. In the figure, the support 13 is provided with a fixed portion 15 (FIG. 3) fixed on the floor portion 7 and a pair of the opposing portions in the depth direction (thickness direction) of the rope brake device 12. Opposing portions 16 and 17 are provided.

  Between the opposing parts 16 and 17, a first rope sandwiching body 18 and a second rope sandwiching body 19 that are arranged side by side in the width direction of the rope brake device 12 are provided. Each main rope 9 is passed between the first rope sandwiching body 18 and the second rope sandwiching body 19. The main ropes 9 are arranged in a line at intervals in the depth direction of the rope brake device 12.

  The first rope sandwiching body 18 includes a first rotating shaft 21 extending in the depth direction of the rope brake device 12 and a first roller 22 fixed to the first rotating shaft 21. The first rotating shaft 21 is rotatably provided on the facing portions 16 and 17 via a bearing 25. The first rotating shaft 21 and the first roller 22 are integrally rotated about the axis of the first rotating shaft 21.

  The second rope sandwiching body 19 has a second rotating shaft 23 extending in the depth direction of the rope brake device 12 and a second roller 24 fixed to the second rotating shaft 23. The second rotating shaft 23 is rotatably provided on the facing portions 16 and 17 via a bearing 25. The second rotating shaft 23 and the second roller 24 are integrally rotated about the axis of the second rotating shaft 23.

  The first roller 22 and the second roller 24 are disposed between one facing portion 16 and the other facing portion 17. The outer diameter of the first roller 22 is larger than the outer diameter of the second roller 24.

  A plurality of first rope grooves 26 extending in the rotation direction of the first roller 22 are provided on the outer peripheral portion of the first roller 22. In addition, a plurality of second rope grooves 27 extending in the rotation direction of the second roller 24 are provided on the outer peripheral portion of the second roller 24.

  Each main rope 9 is sandwiched between the first roller 22 and the second roller 24 while being inserted into the first rope groove 26 and the second rope groove 27, respectively. The first roller 22 and the second roller 24 are pressed in a direction approaching each other. Accordingly, a frictional force is generated between each of the first roller 22 and the second roller 24 and each main rope 9. The first roller 22 and the second roller 24 are rotated while being in contact with the main ropes 9 as the main ropes 9 move. In addition, the material of each outer peripheral part of the 1st roller 22 and the 2nd roller 24 is made into the friction material for preventing the damage to each main rope 9. FIG. For example, nylon (registered trademark) or urethane resin is used as the friction material.

  The rotation of the second rotating shaft 23 and the second roller 24 is braked by a braking device 28 supported by the support 13. That is, the second roller 24 is a braking roller whose rotation is braked by the braking device 28.

  The braking device 28 includes a disk-shaped disk (rotary body) 29 that rotates together with the second rotating shaft 23, and a contact position that contacts the disk 29 and a separation position that is separated from the disk 29. A brake body 30 that can be displaced and a brake body displacement device 31 that displaces the brake body 30 between a contact position and a separation position are provided. 2 and 3 show the rope brake device 12 when the braking body 30 is in the contact position.

  A part of the second rotating shaft 23 protrudes from the one opposing portion 16 to the outside of the support 13 as a protruding shaft portion 23a (FIG. 2). The disk 29 is provided on the protruding shaft portion 23 a via the sprocket 32.

  The protruding shaft portion 23 a is provided with a plurality of fitting grooves 33 extending in the axial direction of the second rotating shaft 23. The sprocket 32 is slidably fitted in each fitting groove 33. The disk 29 is slidably fitted on a tooth portion provided on the outer peripheral portion of the sprocket 32. Thereby, the sprocket 32 and the disk 29 are fixed with respect to the second rotation shaft 23 in the rotation direction of the second rotation shaft 23 and can be displaced in the axial direction of the second rotation shaft 23. Yes.

  A disk-shaped mounting plate 34 is fixed to the surface of the one opposing portion 16 on the disk 29 side. A lining 35 is attached to the surface of the mounting plate 34 facing the disk 29. A plurality of support bolts 36 disposed on the outer side in the radial direction of the disk 29 are screwed onto the outer peripheral portion of the mounting plate 34. Each support bolt 36 extends along the axial direction of the second rotating shaft 23. The brake body 30 and the brake body displacement device 31 are provided on each support bolt 36. That is, the brake body 30 and the brake body displacement device 31 are supported by the mounting plate 34 via the support bolts 36.

  The braking body displacing device 31 is arranged on the side farther from the mounting plate 34 than the disk 29 in the axial direction of the second rotating shaft 23. The brake body 30 is disposed between the brake body displacement device 31 and the disk 29. The disk 29 is disposed between the mounting plate 34 and the braking body 30. Note that the projecting shaft portion 23 a passes through each of the brake body 30, the brake body displacement device 31, and the mounting plate 34.

  The opening position of the braking body 30 is located on the side farther from the mounting plate 34 than the contact position in the axial direction of the second rotating shaft 23. That is, the opening position of the brake body 30 is closer to the brake body displacement device 31 than the contact position. The brake body 30 hits the disk 29 and reaches the mounting plate 34 together with the disk 29 until the brake body 30 reaches the contact position from the open position. When the brake body 30 reaches the contact position, the disk 29 is pressed against the mounting plate 34 while being in contact with the brake body 30 (braking operation). Further, the disc 29 is separated from each of the braking body 30 and the mounting plate 34 by releasing the braking body 30 from the contact position to the opening position (release operation).

  The braking body 30 includes an armature 37 guided along the support bolts 36 in the axial direction of the second rotating shaft 23, and a lining 38 attached to a surface of the armature 37 facing the disk 29. .

  When the braking body 30 is in the contact position, the linings 35 and 38 are in contact with the disk 29. At this time, a frictional force is generated between the linings 35 and 38 and the disk 29. As a result, a braking force for braking the rotation of the second rotating shaft 23 and the second roller 24 is applied to the disk 29. The magnitude of the braking force applied to the disk 29 is set to be smaller than the magnitude of the frictional force generated between the second roller 24 and each main rope 9.

  The rotation of the second rotating shaft 23 and the second roller 24 is braked by the braking operation of the braking device 28. The movement of each main rope 9 is braked when the rotation of the second roller 24 is braked. Further, the braking force applied to the second rotating shaft 23, the second roller 24, and each main rope 9 is released by the releasing operation of the braking device 28.

  The brake body displacement device 31 opens the brake body 30 against a plurality of springs (biasing members) 39 that bias the brake body 30 in the direction in which the brake body 30 is displaced to the contact position, and the biasing force of each spring 39. And an electromagnetic magnet 40 for displacing to a separated position. The electromagnetic magnet 40 has an electromagnetic coil 41. The electromagnetic magnet 40 generates an electromagnetic attractive force that displaces the braking body 30 to the open position by energizing the electromagnetic coil 41.

  When the energization of the electromagnetic coil 41 is stopped, the braking body 30 is displaced to the contact position by the urging force of each spring 39. Further, when the electromagnetic coil 41 is energized, the braking body 30 is displaced to the open position against the urging force of each spring 39 by the electromagnetic attractive force generated by the electromagnetic magnet 40.

  The rope holding device 42 that holds the main ropes 9 includes a first rope holding body 18 and a second rope holding body 19. The rope brake device 12 includes a rope pinching device 42 and a braking device 28.

  Next, the operation will be described. When the car 10 is stopped, the energization of the electromagnetic coil 41 is stopped under the control of the control device 14. The braking body 30 at this time is displaced to the contact position. Thereby, a braking force is applied to the disk 29 and the second roller 24.

  When the movement of the car 10 is started, the electromagnetic coil 41 is energized under the control of the control device 14. Thereby, the braking body 30 is displaced from the contact position to the open position. As a result, the braking force applied to the disk 29 and the second roller 24 is released.

  When the car 10 is moved in the hoistway 1, the first roller 22 and the second roller 24 are rotated while being in contact with the main ropes 9 as the car 10 moves. The disk 29 is rotated integrally with the second roller 24.

  Thereafter, when the car 10 reaches the destination floor, the energization of the electromagnetic coil 41 is stopped by the control of the control device 14. Thereby, the braking body 30 is displaced from the open position to the contact position. Thereby, a braking force is applied to the disk 29 and the second roller 24, and the movement of each main rope 9 is braked.

  In such an elevator rope brake device 12, the first roller 22 and the second roller 24 are rotated in accordance with the movement of each main rope 9, and the disk 29 is rotated integrally with the second roller 24. Since the rotation of the disk 29 is braked by the contact of the braking body 30 with the disk 29, each main rope 9 is rotated while the first roller 22 and the second roller 24 are rotated. A braking force can be applied, and each main rope 9 can be prevented from sliding relative to the first roller 22 and the second roller 24. Thereby, each wear amount of each main rope 9, the 1st roller 22, and the 2nd roller 24 can be controlled, and the magnitude of braking force given to each main rope 9 of rope brake device 12 is stabilized. be able to. In addition, since the frequency of work for replacing the main rope 9, the first roller 22, and the second roller 24 can be reduced, the running cost can be reduced. Further, since the braking body 30 is brought into contact with the disk 29 with high processing accuracy to brake the rotation of the disk 29, a more stable braking force can be applied to the second roller 24, and The movement of the rope 9 can be braked more stably.

  Moreover, since the braking body displacement device 31 is configured to displace the braking body 30 between the contact position and the separation position based on information from the control device 14, a rope brake is adapted to the operation of the elevator. The operation of the device 12 can be controlled. Thereby, for example, it is possible to prevent the hoisting machine 3 from being loaded by the braking operation of the rope brake device 12.

  In addition, since the magnitude of the frictional force between the second roller 24 and each main rope 9 is set to be larger than the magnitude of the braking force applied to the second roller 24 by the braking device 28, braking is performed. When the rotation of the second roller 24 is braked by the device 28, the occurrence of slippage of the second roller 24 with respect to each main rope 9 can be prevented. Thereby, it is possible to further suppress the wear amount of each of the main ropes 9 and the second rollers 24.

  In the above example, a braking force is applied only to the second roller 24, that is, only the second roller 24 is a braking roller, but only the first roller 22 is a braking roller. Alternatively, each of the first roller 22 and the second roller 24 may be a braking roller.

  In the above example, the rotating body with which the braking body 30 contacts and separates is the disc-shaped disk 29, but the rotating body may be an annular drum. In this case, the brake body that contacts and separates from the drum and the brake body displacement device that displaces the brake body are disposed inside the drum.

  Further, in the above example, each main rope 9 is sandwiched between one first roller 22 and one second roller 24, but a plurality of first ropes are arranged in the length direction of each main rope 9. The plurality of second rollers 24 and the plurality of second rollers 24 may be arranged, and the main ropes 9 may be sandwiched between the first rollers 22 and the second rollers 24. In this case, at least one of the first roller 22 and the second roller 24 is a braking roller that is braked by the braking device 28. If it does in this way, the contact area with respect to each main rope 9 of each 1st roller 22 and the 2nd roller 24 can be enlarged, and damage to each main rope 9 can be made small.

  Embodiment 2. FIG.

  In the above example, the first roller 22 and the second roller 24 are in contact with each main rope 9, but the first roller 22 is surrounded by the first roller 22 so as to surround the plurality of first rollers 22 together. The second endless belt is wound around each second roller 24 so as to surround the plurality of second rollers 24 together, and the first endless belt and the second endless belt are wound around the endless belt. The belt may be brought into contact with each main rope 9.

  5 is a front view showing an elevator rope brake apparatus according to Embodiment 2 of the present invention. In the figure, the support 13 is provided with a first rope clamp 51 and a second rope clamp 52. Each main rope 9 is passed between the first rope sandwiching body 51 and the second rope sandwiching body 52.

  The first rope sandwiching body 51 includes a plurality of (in this example, two) first rotating shafts 53 and 54 that are spaced apart from each other in the length direction of each main rope 9, and each first rope A plurality (two in this example) of first rollers 55 and 56 fixed to the rotary shafts 53 and 54, and the first rollers 55 and 56 so as to surround the first rollers 55 and 56 together. And a first endless belt 57 wound around the belt. Tension is applied to the first endless belt 57 by the first rollers 55 and 56.

  The second rope sandwiching body 52 includes a plurality of (in this example, two) second rotating shafts 58 and 59 disposed at intervals from each other in the length direction of each main rope 9, and each second rope sandwiching body 52. A plurality (two in this example) of second rollers 60 and 61 fixed to the rotary shafts 58 and 59, and the second rollers 60 and 61 so as to surround the second rollers 60 and 61 together. And a second endless belt 62 wound around the belt. Tension is applied to the second endless belt 62 by the second rollers 60 and 61.

  The first endless belt 57 and the second endless belt 62 are configured to move around while contacting the main ropes 9 as the main ropes 9 move. A plurality of first belt grooves 63 extending in a direction in which the first endless belt 57 is circulated is provided on the outer peripheral portion of the first endless belt 57. A plurality of second belt grooves 64 extending in a direction in which the second endless belt 62 is moved around are provided on the outer peripheral portion of the second endless belt 62. Each main rope 9 is sandwiched between the first endless belt 57 and the second endless belt 62 while being inserted into each of the first belt grooves 63 and the second belt grooves 64. It is.

  The first rotating shafts 53 and 54 are provided with a connecting plate 65 for maintaining the interval between the first rollers 55 and 56 at a predetermined interval. A first intermediate roller 66 disposed between the first roller 55 and the first roller 56 is rotatably provided on the connecting plate 65. The first intermediate roller 66 is in contact with the inner peripheral surface of the first endless belt 57. The first intermediate roller 66 rotates while contacting the inner peripheral surface of the first endless belt 57 as the first endless belt 57 rotates.

  The second rotating shafts 58 and 59 are provided with a connecting plate 67 for maintaining the interval between the second rollers 60 and 61 at a predetermined interval. A second intermediate roller 68 disposed between the second roller 60 and the second roller 61 is rotatably provided on the connecting plate 67. The second intermediate roller 68 is in contact with the inner peripheral surface of the second endless belt 62. The second intermediate roller 68 is rotated while contacting the inner peripheral surface of the second endless belt 62 as the second endless belt 62 rotates.

  Each of the first roller 55, the first roller 56, and the first intermediate roller 66 includes a second roller 60, a second roller 61, and a second intermediate roller 68 in the length direction of each main rope 9. It is arranged at the same position as each of the above. The first roller 55, the first roller 56, and the first intermediate roller 66, and the second roller 60, the second roller 61, and the second intermediate roller 68 are pressed toward each other. . Accordingly, a frictional force is generated between the first endless belt 57 and the second endless belt 62 and each main rope 9.

  In addition, at least one of the first rollers 55 and 56 and the second rollers 60 and 61 is a braking roller that is braked by the braking device 28. In this example, the first roller 56 and the second roller 60 arranged at different positions in the length direction of the main ropes 9 are brake rollers. Two brake devices 28 that individually brake the rotation of the first roller 56 and the second roller 60 are supported on the support 13. The configuration of each braking device 28 is the same as that of the first embodiment.

  The frictional force between the first roller 56 and the first endless belt 57 and the frictional force between each main rope 9 and the first endless belt 57 are the first rotating shaft 54 and the first endless belt 57. The braking force of the braking device 28 applied to the roller 56 is set larger. The frictional force between the second roller 60 and the second endless belt 62 and the frictional force between each main rope 9 and the second endless belt 62 are represented by the second rotating shaft 58 and It is set larger than the braking force of the braking device 28 applied to the second roller 60. Other configurations are the same as those of the first embodiment.

  In such an elevator rope brake device, the first endless belt 57 wound around the first rollers 55 and 56 and the second endless belt 62 wound around the second rollers 60 and 61 are used. Since the main ropes 9 are sandwiched between the first ropes 55 and 56 and the second rollers 60 and 61 are brought into direct contact with the main ropes 9, the first ropes The contact area of the sandwiching body 51 and the second rope sandwiching body 52 with respect to each main rope 9 can be increased, and damage to each main rope 9 can be further reduced.

  Further, the frictional force between the first endless belt 57 and the second endless belt 62 and each main rope 9 is larger than the braking force of the braking device 28 on the first roller 56 and the second roller 60. Therefore, when the rotation of the first roller 56 and the second roller 60 is braked by the braking device 28, the main ends of the first endless belt 57 and the second endless belt 62 are set. The occurrence of slipping on the rope 9 can be prevented.

  In the above example, the first roller 56 and the second roller 60 are brake rollers, but at least one of the first roller 55, 56 and the second roller 60, 61 is It may be a braking roller.

Embodiment 3 FIG.
FIG. 6 is a front view showing an elevator rope brake device according to Embodiment 3 of the present invention. In the figure, the support 13 is provided with a rope pinching device 71 for pinching each main rope 9. The rope sandwiching device 71 is in contact with the first rope sandwiching body 72 and each main rope 9, the operating position for pressing the main rope 9 against the first rope sandwiching body 72, and the release that is separated from each main rope 9. A second rope sandwiching body 73 that is displaceable between positions, and a rope sandwiching body displacement device 74 that displaces the second rope sandwiching body 73 between the operating position and the release position. FIG. 6 shows the rope brake device when the second rope sandwiching body 73 is in the operating position.

  The rope pinch body displacement device 74 includes an arm 75 that can rotate with respect to the support 13 and an arm rotation device 76 that is supported by the support 13 and rotates the arm 75. The fixing portion 15 is provided with an attachment pin 77 extending in the depth direction of the rope brake device. The base end portion of the arm 75 is attached to the attachment pin 77. The arm 75 is rotatable about the axis of the mounting pin 77. The tip of the arm 75 is connected to the arm rotation device 76. The rope pinch body displacement device 74 is operated based on a command (information) from the control device 14.

  The first rope sandwiching body 72 includes a plurality of (in this example, two) first rotary shafts 21 that are spaced apart from each other in the length direction of each main rope 9 and each first rotary shaft. And a plurality of (two in this example) first rollers 22 fixed to 21. Each first rotating shaft 21 is rotatably provided on the support 13 via a bearing. The first rotating shaft 21 and the first roller 22 are integrally rotated about the axis of the first rotating shaft 21.

  The second rope sandwiching body 73 is provided on the arm 75. Further, the second rope sandwiching body 73 is displaced between the operating position and the release position by the rotation of the arm 75. Furthermore, the second rope sandwiching body 73 includes a plurality of (in this example, two) second rotary shafts 23 arranged at intervals from each other in the length direction of the arm 75, and each second rotary shaft. And a plurality of (two in this example) second rollers 24 fixed to 23. Each second rotating shaft 23 is rotatably provided on the arm 75 via a bearing. The second rotating shaft 23 and the second roller 24 are integrally rotated about the axis of the second rotating shaft 23. A part of the second rotating shaft 23 is a protruding shaft portion that protrudes from the facing portion 16 to the outside of the support 13.

  A braking device 28 is provided on the protruding shaft portion of each second rotating shaft 23. Each braking device 28 is supported by the second rotating shaft 23. Each braking device 28 is displaced together with each second rotating shaft 23 as the arm 75 rotates. The configuration of each braking device 28 is the same as that of the first embodiment.

  In each brake device 28, when the second rope clamp 73 is displaced to the operating position, the brake (see FIG. 2) is displaced to the contact position, and the second rope clamp 73 is displaced to the release position. It is controlled by the control device 14 so that the brake body is sometimes displaced to the open position. The rotation of each second roller 24 is braked by the displacement of the braking body to the contact position. That is, each second roller 24 is a braking roller that is braked by the braking device 28.

  A plurality of first rope grooves 26 extending in the rotation direction of the first roller 22 are provided on the outer peripheral portion of the first roller 22. In addition, a plurality of second rope grooves 27 extending in the rotation direction of the second roller 24 are provided on the outer peripheral portion of the second roller 24.

  Each main rope 9 is inserted into each of the first rope groove 26 and the second rope groove 27 when the second rope sandwiching body 73 is in the operating position, and is connected to the first roller 22 and the first roller 22. 2 between the two rollers 24. When the second rope sandwiching body 73 is in the operating position, a frictional force is generated between the first roller 22 and the second roller 24 and each main rope 9. When the second rope sandwiching body 73 is in the operating position, the first roller 22 and the second roller 24 are rotated while being in contact with the main ropes 9 as the main ropes 9 move. It has become. The configurations of the first roller 22 and the second roller 24 are the same as those in the first embodiment.

  Each main rope 9 is separated not only from each second roller 24 but also from the first roller 22 when the second rope sandwiching body 73 is displaced to the release position. Thereby, when the second rope sandwiching body 73 is in the release position, the respective rotations of the first roller 22 and the second roller 24 remain stopped even if each main rope 9 is moved. . That is, when the second rope sandwiching body 73 is in the release position, transmission of force from each main rope 9 to the first roller 22 and the second roller 24 is blocked. Each main rope 9 may be always in contact with the first roller 22 regardless of the position of the second rope sandwiching body 73.

  The arm rotation device 76 is supported by the support body 13. The arm rotation device 76 is connected to the distal end portion of the arm 75 via a connection bolt (connection member) 78. The arm rotation device 76 rotates the arm 75 so that the second rope sandwiching body 73 is displaced between the operating position and the release position.

  The arm rotation device 76 includes a movable body 79 that is displaced together with the arm 75, a frame body 80 that is supported by the support body 13 and restricts the amount of displacement of the movable body 79, and a second rope sandwiching body 73. A plurality of springs (biasing bodies) 81 for urging the arm 75 and the movable body 79 in the direction displaced to the position, and the second rope sandwiching body 73 is displaced to the release position against the urging force of each spring 81. And an electromagnetic magnet 82 for displacing the arm 75 and the movable body 79 in the direction to be moved.

  The movable body 79 includes a movable body main body 83 attached to the tip of the arm 75 via a connecting bolt 78, and a plate-shaped armature 84 that is fixed to the movable body main body 83 and is displaceable within the frame body 80. And have.

  The frame body 80 includes a first restricting portion 85 and a second restricting portion 86 that are arranged at intervals from each other in the direction in which the movable body 79 is displaced. The first restricting portion 85 is disposed closer to the arm 75 than the second restricting portion 86. An electromagnetic magnet 82 disposed in the frame body 80 is fixed to the second restricting portion 86. The armature 84 is disposed in the gap between the first restricting portion 85 and the electromagnetic magnet 82. The second rope sandwiching body 73 is displaced to the operating position when the armature 84 is in contact with the first restricting portion 85, and is displaced to the release position when the armature 84 is in contact with the electromagnetic magnet 82. It is like that.

  Each spring 81 is provided in a contracted state between the first restricting portion 85 and the arm 75. That is, the arm 75 is urged by each spring 81 in a direction away from the first restricting portion 85. The electromagnetic magnet 82 has an electromagnetic coil 87. The electromagnetic magnet 82 generates an electromagnetic attractive force for attracting the armature 84 by energizing the electromagnetic coil 87.

  When the energization of the electromagnetic coil 87 is stopped, the second rope sandwiching body 73 is displaced to the operating position by the bias of each spring 81. When the electromagnetic coil 87 is energized, the armature 84 is attracted by the electromagnetic magnet 82 against the urging force of each spring 81, and the second rope sandwiching body 73 is displaced from the operating position to the released position. Other configurations are the same as those in the first embodiment.

  Next, the operation will be described. When the car 10 is stopped, the power supply to the electromagnetic coil of each braking device 28 and the power supply to the electromagnetic coil 87 of the arm rotation device 76 are stopped under the control of the control device 14. At this time, the braking body of each braking device 28 is displaced to the contact position, and the second rope sandwiching body 73 is displaced to the operating position. That is, the rotation of the second roller 24 is braked by each brake device 28 in a state where each first roller 22 and each second roller 24 are in contact with each main rope 9.

  When the movement of the car 10 is started, energization of each electromagnetic coil of each braking device 28 and each electromagnetic coil 87 of the arm rotation device 76 is performed under the control of the control device 14. As a result, the braking body of each braking device 28 is displaced to the open position, and the second rope sandwiching body 73 is displaced to the release position. As a result, the braking force applied to each main rope 9 is released.

  Thereafter, the car 10 is moved in the hoistway 10. When the car 10 is moved, the first roller 22 and the second roller 24 are separated from the main ropes 9, so that they are not rotated with the movement of the main ropes 9.

  Thereafter, when the car 10 reaches the destination floor, the energization of the electromagnetic coil of each braking device 28 and the energization of the electromagnetic coil 87 of the arm rotation device 76 are stopped under the control of the control device 14. Thereby, the brake body of each brake device 28 is displaced from the open position to the contact position, and the second rope clamp body 73 is displaced from the release position to the operating position. As a result, a braking force is applied to each main rope 9.

  In such an elevator rope brake device, there is a gap between an operating position where the main rope 9 comes into contact with the main rope 9 and presses the main rope 9 against the first rope sandwiching body 72 and a release position where the main rope 9 is released. Thus, the second rope sandwiching body 73 is displaced, and each main rope 9 is braked by braking the rotation of each second roller 24 when the second rope sandwiching body 73 is in the operating position. Therefore, the movement of each main rope 9 can be braked while rotating the first roller 22 and the second roller 24, and each main rope 9 can be braked by the first roller 22. In addition, sliding with respect to the second roller 24 can be prevented. Thereby, the magnitude of the braking force applied to each main rope 9 of the rope brake device 12 can be stabilized, and the running cost can be reduced. Moreover, since it can prevent that the 2nd rope clamp body 73 continues pressing each main rope 9 against the 1st rope clamp body 72, each main rope 9, the 1st rope clamp body 72, and the 2nd It is possible to further reduce the damage (damage) of the rope sandwiching body 73.

  Further, the rope pinch body displacement device 74 is configured to displace the second rope pinch body 73 between the operating position and the release position based on a command from the control device 14, so that the operation of the elevator can be performed. In addition, the operation of the rope brake device can be controlled. Thereby, for example, it can prevent applying a load to the hoisting machine 3 by the braking operation of the rope brake device.

Embodiment 4 FIG.
FIG. 7 is a cross-sectional plan view showing an elevator rope brake device according to Embodiment 4 of the present invention. In the figure, the support 13 is provided with a rope pinching device 91 for pinching each main rope 9. The rope sandwiching device 91 is in contact with the first rope sandwiching body 92 and each main rope 9, the operating position for pressing the main rope 9 against the first rope sandwiching body 92, and the release released from each main rope 9. A second rope pinch body 93 that can be displaced between positions; and a rope pinch body displacement device 94 that displaces the second rope pinch body 93 between the operating position and the release position. FIG. 7 shows the rope brake device when the second rope clamp 93 is in the operating position.

  The rope sandwiching body displacement device 94 is disposed between one facing portion 16 and the other facing portion 17. The rope pinch body displacement device 94 includes a movable body 95 that is displaced together with the second rope pinch body 93 and an electromagnetic switching device 96 that displaces the movable body 95.

  The movable body 95 includes an armature 97 that faces the electromagnetic switching device 96 and a mounting portion 99 that is fixed to the armature 97 and has a recess 98 provided on the first rope sandwiching body 92 side. The electromagnetic switching device 96 includes a plurality of springs (biasing bodies) 100 that bias the movable body 95 in a direction in which the second rope sandwiching body 93 is displaced to the operating position, and a second spring 100 against each spring 100. An electromagnetic magnet 101 that displaces the movable body 95 in a direction in which the rope sandwiching body 93 is displaced to the release position is provided.

  The electromagnetic magnet 101 has an electromagnetic coil 102. The electromagnetic magnet 101 generates an electromagnetic attractive force for attracting the armature 97 by energizing the electromagnetic coil 102. Energization of the electromagnetic coil 102 and stopping of the energization are controlled by the control device 14. The second rope sandwiching body 93 is displaced to the release position by energizing the electromagnetic coil 102 and is displaced to the operating position by stopping energization of the electromagnetic coil 102.

  The first rope sandwiching body 92 includes a first rotating shaft 21 that is rotatably provided on the support body 13, and a first roller 22 that is fixed to the first rotating shaft 21. The first rotating shaft 21 and the first roller 22 are integrally rotated about the axis of the first rotating shaft 21.

  The second rope sandwiching body 93 is provided on the movable body 95 in a state where a part thereof is disposed in the recess 98. The second rope sandwiching body 93 includes a second rotating shaft 23 that is rotatably provided on the movable body 95 and a second roller 24 that is fixed to the second rotating shaft 23. . The second rotating shaft 23 and the second roller 24 are integrally rotated about the axis of the second rotating shaft 23.

  A plurality of first rope grooves 26 extending in the rotation direction of the first roller 22 are provided on the outer peripheral portion of the first roller 22. In addition, a plurality of second rope grooves 27 extending in the rotation direction of the second roller 24 are provided on the outer peripheral portion of the second roller 24.

  Each main rope 9 is inserted into each of the first rope groove 26 and the second rope groove 27 when the second rope clamp 93 is in the operating position, 2 between the two rollers 24. When the second rope sandwiching body 93 is in the operating position, a frictional force is generated between the first roller 22 and the second roller 24 and each main rope 9. When the second rope sandwiching body 93 is in the operating position, the first roller 22 and the second roller 24 are rotated while being in contact with the main ropes 9 as the main ropes 9 move. It has become.

  Each main rope 9 is separated not only from each second roller 24 but also from the first roller 22 when the second rope sandwiching body 93 is displaced to the release position. That is, when the second rope sandwiching body 93 is in the release position, transmission of force from each main rope 9 to the first roller 22 and the second roller 24 is blocked. Each main rope 9 may be always in contact with the first roller 22 regardless of the position of the second rope sandwiching body 93.

  A braking device 103 that brakes the rotation of the first rotating shaft 21 and the first roller 22 is provided between the one opposing portion 16 and the first roller 22. That is, the first roller 22 is a braking roller that is braked by the braking device 103. The braking device 103 includes a sliding plate (rotating body) 104 fixed to the first roller 22, a braking body 105 that contacts the sliding plate 104, and a pressure for pressing the braking body 105 against the sliding plate 104. Device 106.

  The pressing device 106 is provided in a plurality of pressing springs (biasing bodies) 107 that generate pressing force that presses the braking body 105 against the sliding plate 104 and one opposing portion 16. And a plurality of adjusting bolts 108 for adjusting the size. The magnitude of the pressing force of each pressing spring 107 is adjusted by adjusting the amount of screwing of each adjusting bolt 108 with respect to one facing portion 16.

  The brake body 105 includes a brake body main body 110 provided with a spring housing groove 109 in which each pressing spring 107 is accommodated, and a friction member 111 provided in the brake body main body 110 and contacting the sliding plate 104. Yes. The brake body 105 is constantly pressed by the pressing device 106 while being in contact with the sliding plate 104. Thereby, a frictional force is always generated between the sliding plate 104 and the friction member 111. The rotation of the first rotating shaft 21 and the first roller 22 is braked by the frictional force generated between the sliding plate 104 and the friction member 111. The magnitude of the frictional force generated between the sliding plate 104 and the friction member 111 is determined by adjusting the screwing amount of each adjusting bolt 108 and the first rope 22 and the second roller 24 and each main rope. 9 is smaller than the magnitude of the frictional force generated between. Other configurations are the same as those in the first embodiment.

  Next, the operation will be described. The braking body 105 is constantly pressed by the pressing device 106 against the sliding plate 104 fixed to the first roller 22. Thereby, a braking force is always applied to the first rotating shaft 21 and the first roller 22.

  When the car 10 is stopped, the energization of the electromagnetic coil 102 is stopped under the control of the control device 14. At this time, the second rope sandwiching body 93 is displaced to the operating position. Thus, a braking force is applied to each main rope 9.

  When the movement of the car 10 is started, the electromagnetic coil 102 is energized under the control of the control device 14. Accordingly, the second rope sandwiching body 93 is displaced from the operating position to the release position against the urging force of each spring 100. As a result, the first rope sandwiching body 92 and the second rope sandwiching body 93 are separated from each main rope 9 and the braking force applied to each main rope 9 is released. Thereafter, the car 10 is moved in the hoistway 1 while the first roller 22 and the second roller 24 are separated from the main ropes 9.

  Thereafter, when the car 10 reaches the destination floor, the energization of the electromagnetic coil 102 is stopped by the control of the control device 14. As a result, the second rope sandwiching body 93 is displaced from the release position to the operating position. Thereby, each main rope 9 is pressed against the first roller 22, and a braking force is applied to each main rope 9.

  As described above, since the braking body 105 is always brought into contact with the sliding plate 104, the rotation of the first roller 22 is constantly braked, so that the mechanism for operating the braking body 105 can be eliminated. The structure of the braking device 103 can be simplified. In addition, maintenance and inspection work of the braking device 103 can be facilitated.

  Further, since the first roller 22 and the sliding plate 104 are integrated, the number of parts can be further reduced, and the structure of the first rope sandwiching body 92 and the braking device 103 can be further simplified. .

  In the above example, only the first roller 22 is the braking roller, but only the second braking roller 24 may be the braking roller.

  In the above example, the rotating body with which the braking body 105 contacts is the sliding plate 104, but the rotating body may be an annular drum. In this case, the brake body that contacts the drum and the pressing device that presses the brake body against the drum are disposed inside the drum.

Embodiment 5 FIG.
FIG. 8 is a cross-sectional plan view showing an elevator rope brake device according to Embodiment 5 of the present invention. FIG. 8 shows the rope brake device when the second rope clamp 93 is in the operating position. In the drawing, a part of the second rotating shaft 23 protrudes to the outside of the support body 13 from one facing portion 16 as a protruding shaft portion 23a. The protruding shaft portion 23 a is provided with a braking device 121 for braking the rotation of the second rotating shaft 23. That is, the second roller 24 is a braking roller that is braked by the braking device 121. An attachment member 122 through which the protruding shaft portion 23a is passed is disposed between the braking device 121 and the one facing portion 16. The attachment member 122 is fixed to one facing portion 16.

  The braking device 121 includes a rotating body 123 that is rotated integrally with the protruding shaft portion 23a, a sliding plate (braking body) 124 that is disposed between the rotating body 123 and the mounting member 122, and that contacts the rotating body 123. And a pressing device 125 that presses the rotating body 123 against the sliding plate 124. The braking device 121 is displaced together with the second rope sandwiching body 93 with respect to the support body 13 and the attachment member 122.

  A key 126 extending in the axial direction of the second rotating shaft 23 is disposed between the rotating body 123 and the protruding shaft portion 23a. Thereby, the rotating body 123 can be displaced in the axial direction of the second rotating shaft 23 with respect to the protruding shaft portion 23a, and is fixed in the rotating direction of the rotating body 123.

  The sliding plate 124 is a disc in which the protruding shaft portion 23a is passed through the center portion. A plurality of bolt through long holes 127 extending in the direction in which the second rope sandwiching body 93 is displaced are provided on the outer peripheral portion of the sliding plate 124. A plurality of stopper bolts 128 attached to the attachment member 122 are passed through the respective bolt through long holes 127. As a result, the sliding plate 124 can be displaced with respect to the mounting member 122 in the length direction of the bolt through-hole 127 and is fixed in the circumferential direction of the sliding plate 124.

  The pressing device 125 is rotated integrally with the protruding shaft portion 23a. The pressing device 125 also includes a disc spring (biasing body) 129 that urges the rotating body 123 in a direction in which the rotating body 123 is pressed against the sliding plate 124, and that the disc spring 129 is disengaged from the protruding shaft portion 23a. And a detachment prevention plate 130 for preventing it. The disc spring 129 is contracted between the disengagement prevention plate 130 and the rotating body 123.

  The rotating body 123 includes a rotating body main body 131 and a friction member 132 that is provided on the rotating body main body 131 and contacts the sliding plate 124. The rotating body 123 is constantly pressed against the sliding plate 124 by the pressing device 125 while being in contact with the sliding plate 124. Thereby, a frictional force is always generated between the sliding plate 124 and the friction member 132. The rotation of the second rotating shaft 23 and the second roller 24 is braked by the frictional force generated between the sliding plate 124 and the friction member 132. Note that the magnitude of the friction force generated between the sliding plate 124 and the friction member 132 is greater than the magnitude of the friction force generated between the first roller 22 and the second roller 24 and each main rope 9. It is also small. Other configurations and operations are the same as those in the fourth embodiment.

  As described above, the rotation of the first roller 22 is constantly braked by the braking device 103 and the rotation of the second roller 24 is always braked by the braking device 121. The size can be shared by the braking device 103 and the braking device 125, and each of the braking device 103 and the braking device 121 can be miniaturized.

In each of the above embodiments, the control of the rope brake device by the control device 14 brakes the movement of each main rope 9 only when the car 10 is normally stopped. You may make it brake the movement of each main rope 9 at the time of emergency, such as when the emergency stop device for prevention operates.

Claims (9)

A first rope sandwiching body including a first roller and a second rope sandwiching body including a second roller, and a main rope for suspending a car is connected to the first rope sandwiching body and the second rope sandwiching body. Each of the first roller and the second roller is rotated with the movement of the main rope, and the first roller and the second roller. A rope pinching device in which at least one of the two rollers is a braking roller; a rotating body that rotates together with the braking roller; a contact position that contacts the rotating body; and an opening that is separated from the rotating body. A brake body displaceable between the separated position and a brake body displacing device for displacing the brake body between the contact position and the separated position, wherein the brake body is brought into contact with the rotating body. Therefore, the rotating body and the braking rod Equipped with a braking device that brakes the rotation of the roller,
An elevator rope brake device characterized in that the movement of the main rope is braked by braking the rotation of the brake roller.   The braking body displacing device is configured to displace the braking body between the contact position and the opening position based on information from a control device that controls operation of an elevator. The elevator rope brake device according to claim 1. An operating position for pressing the main rope against the first rope sandwiching body in contact with a main rope that includes a first roller and a first roller, and a second roller that suspends a car. A second rope pinch body that is displaceable between a release position separated from the rope, and a rope pinch body displacement device that displaces the second rope pinch body between the operating position and the release position. Each of the first roller and the second roller is rotated along with the movement of the main rope when the second rope sandwiching body is in the operating position, A rope pinching device in which at least one of the first roller and the second roller is a braking roller, a rotating body that rotates together with the braking roller, and a braking body that contacts the rotating body And the above system A braking device for braking rotation of the braking roller by contact of the moving body with the rotating body;
The elevator rope brake device is characterized in that the movement of the main rope is braked by braking the rotation of the brake roller and displacing the second rope sandwiching body to the operating position. .   The rope pinch body displacement device is configured to displace the second rope pinch body between the operating position and the release position based on information from a control device that controls the operation of the elevator. The elevator rope brake device according to claim 3.   The elevator rope brake according to any one of claims 1 to 4, wherein the first roller and the second roller are rotated while being in contact with the main rope. apparatus.   6. The elevator rope brake device according to claim 5, wherein a frictional force between the braking roller and the main rope is larger than a braking force applied to the rotating body by the braking device.   7. The first rope sandwiching body includes a plurality of the first rollers, and the second rope sandwiching body includes a plurality of second rollers. The elevator rope brake device according to any one of the above. The first rope sandwiching body includes a plurality of the first rollers and a first endless belt wound around the first rollers so as to surround the first rollers together. And
The second rope sandwiching body includes a plurality of the second rollers and a second endless belt wound around the second rollers so as to surround the second rollers together. And
The elevator rope brake according to any one of claims 1 to 4, wherein the main rope is sandwiched between the first endless belt and the second endless belt. apparatus. 9. The frictional force between the endless belt wound around the braking roller and the main rope is larger than the braking force applied to the rotating body by the braking device. The elevator rope brake device described.

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